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ZanzabumX [31]
3 years ago
12

Which set is closed under the operation multiplication?

Mathematics
1 answer:
oee [108]3 years ago
3 0
I have another set of choices here:

A. {0.5, 1, 2} 


B. {1, 2, 4} 


C. {1, 2, 3, 4, 5} 


<span>D. {0} 
</span>
If you multiply two numbers from a closed set the answer is in the set. 
<span>So A is not closed because 2 x 2 = 4 which isn't in the set. Only 0.5, 1, and 2 are in set A. </span>

<span>Try multiplying the largest numbers in sets B, C, and D by themselves. You will soon discover the closed set.</span>
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Please answer this question thank you for your help
vovangra [49]
Hey!
What I did was I graphed them or you could set them equal to each other and use logs!
I graphed them and found the intersections. There were 2, but one was negative so I checked for a positive intersection and found one. 
The first blank is 7 and the other is 140!
Hope this helps!
4 0
4 years ago
According to historical records, the Great Pyramid of Giza was originally about 147 meters tall. Assuming it was built with its
vivado [14]

Answer:

115m

Step-by-step explanation:

Note that one of the face of a pyramid is a right angled triangle.

Since the pyramid was about 147m tall, the height of triangle will be 147m. If one of the faces is built with one of its faces at 52° to the incline, we can find the original length of one of its sides using SOH CAH TOA

tan(theta) = opposite/adjacent

Given theta = 52°, opposite = 147m (the side directly opposite the angle)

Substituting we have;

Tan52° = 147/adjacent

Adjacent = 147/tan52°

Adjacent = 114.8m

= 115m

Therefore 115m is the original length of one of its side

6 0
4 years ago
Which expression represents the value of 5 nickels and x dimes?
Llana [10]
Since the problem says VALUE, it is talking about the amount of money a nickel and dime are worth has to be included in the expression.
5(0.05) + 0.10x
4 0
3 years ago
Read 2 more answers
Select the values for p, q, and r that will make the following equation true.
gregori [183]

Answer:

P= 3

Q= -14

R= -5

Step-by-step explanation:

Just solve the equation on the right side, you'll get:

=3x^2 -15x +x -5

=3x^2 -14x -5

Now compare it to the equation on the left side,

The coefficient of x^2 on the left is "p", on the right that we just solved is 3.

Same for "q" which is the coefficient on the left, on the right it's -14.

And for "r" it's -5 from the equation on the right.

5 0
4 years ago
Solve for x 5/<br>6X equals 10 / 3​
zimovet [89]

Answer:

\large\boxed{x=\dfrac{1}{2}=0.5}

Step-by-step explanation:

\dfrac{5}{6x}=\dfrac{10}{3}\qquad\text{cross multiply}\\\\(6x)(10)=(5)(6)\\\\60x=30\qquad\text{divide both sides by 60}\\\\x=\dfrac{30}{60}\\\\x=\dfrac{1}{2}

4 0
3 years ago
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